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-rw-r--r--net/tipc/node.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 52fd80b0e728..3819ab14e073 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -370,13 +370,17 @@ static struct tipc_node *tipc_node_create(struct net *net, u32 addr,
spin_lock_bh(&tn->node_list_lock);
n = tipc_node_find(net, addr);
if (n) {
+ if (n->capabilities == capabilities)
+ goto exit;
/* Same node may come back with new capabilities */
+ write_lock_bh(&n->lock);
n->capabilities = capabilities;
for (bearer_id = 0; bearer_id < MAX_BEARERS; bearer_id++) {
l = n->links[bearer_id].link;
if (l)
tipc_link_update_caps(l, capabilities);
}
+ write_unlock_bh(&n->lock);
goto exit;
}
n = kzalloc(sizeof(*n), GFP_ATOMIC);